Dust collecting bag performance detection device

Abstract

The invention relates to the technical field of dust collecting bag detection, and discloses a dust collecting bag performance detection device which comprises a detection box body and a dust collecting bag body located in the detection box body, a supporting frame is inserted into the dust collecting bag body, a detection displacement mechanism is arranged in the detection box body, the supporting frame comprises a top ring, and a plurality of vertical frames and a plurality of transverse rings are arranged at the bottom of the top ring. The detection shifting mechanism comprises a cover ring, a cloth bag feeding mechanism is arranged outside the cover ring, and a driving module for driving the cloth bag feeding mechanism is arranged in the detection box body. Compared with the prior art, the detection shifting mechanism has the beneficial effects that the detection shifting mechanism can drive the upper ring piece and the middle ring piece to longitudinally ascend and descend, and the whole area of a cloth bag in the vertical direction can be covered without shutdown; the second electric telescopic rod independently adjusts the height of the middle ring piece and cooperates with the folding cylinder to stretch and retract to change the filtering area, and detection working conditions are rapidly switched; the second gear ring is driven by the third driving gear to drive the cloth bag to rotate, so that different parts of the side face are in contact with dust-containing airflow in sequence, and all-directional detection can be completed without disassembly and assembly.

Description

Technical Field

[0001] This invention relates to the field of dust collector bag testing technology, specifically to a dust collector bag performance testing device. Background Technology

[0002] As a core filtration component of industrial dust collection systems, filter bags directly determine the purification effect and service life of the dust collection system through their filtration efficiency, air permeability, wear resistance, and anti-clogging capabilities. Inaccurate test data can easily lead to excessive emissions from the dust collection system or frequent bag replacements, increasing environmental and operational costs for enterprises. Currently, dust collector bag performance testing devices in the industry face significant technical bottlenecks in terms of comprehensiveness and efficiency, making it difficult to meet the core requirements of industrial production for "precise screening, batch testing, and multi-condition adaptability" of dust collector bags.

[0003] Existing technologies mostly target the fixed area of ​​the dust collector bag for testing, and cannot directly and specifically test the top, bottom and edge areas. In actual use, when the filter pores are blocked, the airflow will be diverted to the unblocked areas, and the performance defects of the untested areas are easily missed, resulting in the filter bags not achieving the expected purification effect in actual use.

[0004] Furthermore, existing dust collector bag testing devices cannot simulate the actual working condition of "partial filtration" after the filter pores are partially blocked, making it difficult to assess the redundant filtration capacity of the bag, and the test results deviate greatly from the actual application scenario. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the above-mentioned difficulties and provide a dust collector bag performance testing device.

[0006] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: A dust collector bag performance testing device includes a testing chamber and a dust collector bag body located inside the testing chamber. A support frame that fits against the inner surface of the dust collector bag body is inserted inside the dust collector bag body. A testing and shifting mechanism inserted into the dust collector bag body is provided inside the testing chamber. The support frame includes a top ring, and a plurality of vertical frames and a plurality of horizontal rings are provided at the bottom of the top ring. The testing and shifting mechanism includes a cover ring located on the top ring. A bag feeding mechanism that can drive the dust collector bag body to move up and down is provided outside the cover ring. A drive module for driving the bag feeding mechanism is provided inside the testing chamber.

[0007] As an improvement, the detection chamber includes a fixed chamber with a top cover. A second guide rail is provided inside the top cover. The detection shifting mechanism includes a top block with a slot that slides into the second guide rail. An electric telescopic rod is provided at the bottom of the top block and inserted into the dust collector bag body. An upper ring and a bottom ring are fixedly connected to the bottom of the fixed end and telescopic end of the electric telescopic rod, respectively. A middle ring is slidably sleeved on the telescopic end of the electric telescopic rod. An electric telescopic rod is provided at the bottom of the top block, located on one side of the electric telescopic rod and fixedly connected to the telescopic end of the middle ring. A folding tube is provided between the middle ring and the upper ring.

[0008] As an improvement, the testing chamber also includes a guide rail 1 located on one side of the bottom of the fixed chamber. A movable chamber is slidably mounted on the guide rail 1, and an electric telescopic rod 3 is mounted on the fixed chamber. The telescopic end of the electric telescopic rod 3 is fixedly connected to the movable chamber. By activating the electric telescopic rod 3 to retract, the movable chamber can move towards the fixed chamber and fit into the fixed chamber, thereby putting the testing chamber in a closed state.

[0009] As an improvement, the drive module is located inside the drive box and a lead screw is provided at the bottom of the drive module. The bag feeding mechanism includes a transmission plate that is correspondingly provided and whose end is threaded around the lead screw. The end of the transmission plate is provided with an end seat. A fixing ring that is fixed between the two end seats and is fitted around the top of the dust collector bag body is provided. A gear ring II is rotatably provided on the fixing ring. An elastic ring is provided at the top of the bag feeding mechanism. The bottom of the inner wall of the gear ring II is provided with a placement groove that engages with the elastic ring. A drive gear III that meshes with the gear ring II and is driven by a motor is provided on the end seat.

[0010] As an improvement, the bag feeding mechanism also includes several slots located at the two ends of the gear ring. The cover ring is located inside the gear ring and has several brackets with one end inserted into the slot. The electric telescopic rod has several racks on its outside. The other end of the bracket is rotatably connected to the racks. Both ends of the drive gear are provided with bevel gears. Adjacent bevel gears are meshed and connected. One of the drive gears is driven by a motor through gears.

[0011] As an improvement, the top ring is located between the cover ring and the placement groove, the vertical frame is fitted to the inner wall of the dust collector bag body, and the inner wall of the vertical frame is provided with a guide groove. The upper ring, middle ring and bottom ring are all provided with inserts that slide into the guide groove.

[0012] As an improvement, the bottom ring component includes an operation box fixed to the bottom of the telescopic end of the electric telescopic rod 1. Several storage rods are provided outside the operation box. An outer ring is provided outside the storage rods and an insert is located at the side end of the outer ring. An opening is provided inside the operation box. A gear ring 1 is rotatably provided outside the operation box, and a drive gear 2 that meshes with the gear ring 1 and is driven by a motor is provided at the opening. Several moving plates are provided outside the gear ring 1. A slot is provided inside the storage rods. A fan-shaped folding stop is provided between the moving plate and the slot.

[0013] As an improvement, the top cover is provided with a cylinder that allows the top block to be inserted and an air outlet pipe that communicates with the testing equipment is provided at the side end, and an air inlet pipe that can transport dusty air into the testing chamber is provided at the side end of the moving box.

[0014] The advantages of this invention compared to the prior art are as follows: 1. This device achieves continuous and efficient detection through multi-structure linkage: the detection shifting mechanism can drive the upper and middle ring components to rise and fall vertically, covering the entire vertical area of ​​the filter bag without stopping the machine; the electric telescopic rod two can independently adjust the height of the middle ring component, and in conjunction with the extension and retraction of the folding cylinder, change the filtration area and quickly switch detection conditions; the gear ring two drives the filter bag to rotate under the drive gear three, so that different parts of the side come into contact with the dust-laden airflow in sequence, and can complete all-round detection without disassembly.

[0015] 2. This device optimizes the user experience through its feeding structure: the drive module secures the fixing ring to the top of the dust collector bag, and the elastic ring engages with the placement groove of the toothed ring to achieve a tight fixation; the vertical frame and horizontal ring of the support frame are extended from inside the bag to ensure it maintains its cylindrical shape, preventing collapse caused by the impact of dust-laden airflow or contact with the detection components; the insertion block of the detection displacement mechanism slides along the guide groove of the vertical frame, providing guidance for the bag after feeding and avoiding direct contact that could damage the inner wall of the bag, thus maintaining the stability of the bag's shape throughout the process and laying the foundation for accurate detection data.

[0016] 3. This device achieves full-area coverage detection: In the longitudinal direction, the electric telescopic rod drives the bottom ring to move down to the bottom of the bag, and the drive gear, in conjunction with the rack, raises and lowers the detection components as a whole, allowing detection of different areas at the top, middle, and bottom of the bag. For localized detection, the fan-shaped folding baffle unfolds under the drive of the gear ring and the shifting plate, covering a specific area at the bottom of the bag. Combined with the telescopic adjustment of the middle ring and the folding cylinder, it can accurately detect uncovered areas on the sides. The bag rotation function ensures that the dust-laden airflow is evenly contacted at all angles on the sides, simulating the actual condition of airflow diversion after filter blockage. This multi-dimensional detection method solves the problem of single-area detection in existing technologies, comprehensively collecting filtration efficiency and air permeability data from all areas of the bag, making the test results more valuable. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a dust collector bag performance testing device according to the present invention; Figure 2 This is a schematic diagram showing the overall structure of a dust collector bag performance testing device according to the present invention. Figure 3 This is a partial structural schematic diagram of a dust collector bag performance testing device according to the present invention; Figure 4 This is a partial cross-sectional schematic diagram of a dust collector bag performance testing device according to the present invention; Figure 5This is a partial structural breakdown diagram of a dust collector bag performance testing device according to the present invention; Figure 6 This is a schematic diagram of the detection shifting mechanism of a dust collector bag performance testing device according to the present invention; Figure 7 This is a schematic diagram of the bag feeding mechanism of a dust collector bag performance testing device according to the present invention; Figure 8 This is a partial schematic diagram of the detection shifting mechanism of a dust collector bag performance testing device according to the present invention; Figure 9 This is a schematic diagram of the bottom ring structure of a dust collector bag performance testing device according to the present invention.

[0018] As shown in the figure: 1. Inspection box; 101. Fixed box; 102. Guide rail one; 103. Moving box; 104. Top cover; 105. Guide rail two; 106. Electric telescopic rod three; 2. Support frame; 201. Top ring; 202. Vertical frame; 203. Guide groove; 3. Dust collector bag body; 4. Inspection displacement mechanism; 401. Cover ring; 402. Bracket; 403. Drive gear one; 404. Bevel gear; 405. Electric telescopic rod one; 406. Rack; 407. Top block; 408. Slot; 409. Electric Telescopic rod 2; 410. Upper ring; 411. Bottom ring; 412. Middle ring; 413. Folding cylinder; 414. Operation box; 415. Gear ring 1; 416. Moving plate; 417. Fan-shaped folding stop; 418. Drive gear 2; 419. Insert block; 420. Storage rod; 5. Bag feeding mechanism; 501. Gear ring 2; 502. Slot; 503. Placement slot; 504. Fixing ring; 505. End seat; 506. Drive gear 3; 507. Transmission plate; 6. Drive module; 601. Lead screw. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings.

[0020] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 5 As shown: A dust collector bag performance testing device includes a testing chamber 1 and a dust collector bag body 3 located inside the testing chamber 1. A support frame 2 is inserted into the dust collector bag body 3 and fits against the inner surface of the dust collector bag body 3. A testing displacement mechanism 4 is slidably installed inside the testing chamber 1 and inserted into the dust collector bag body 3. The support frame 2 includes a top ring 201. The bottom of the top ring 201 is provided with a plurality of vertical frames 202 and a plurality of horizontal rings. The testing displacement mechanism 4 includes a cover ring 401 located on the top ring 201. A bag feeding mechanism 5 is provided outside the cover ring 401, which can drive the dust collector bag body 3 to move up and down. A drive module 6 is provided inside the testing chamber 1, which can drive the bag feeding mechanism 5.

[0021] The testing chamber 1 includes a fixed box 101, a top cover 104 on the fixed box 101, and a guide rail 105 inside the top cover 104.

[0022] The testing chamber 1 also includes a guide rail 102 located on one side of the bottom of the fixed chamber 101. A movable chamber 103 is slidably mounted on the guide rail 102. An electric telescopic rod 106 is mounted on the fixed chamber 101. The telescopic end of the electric telescopic rod 106 is fixedly connected to the movable chamber 103. By starting the electric telescopic rod 106 to retract, the movable chamber 103 can move towards the fixed chamber 101 and fit into the fixed chamber 101, thereby putting the testing chamber 1 in a closed state.

[0023] The top cover 104 is provided with a cylinder that allows the top block 407 to be inserted and an air outlet pipe that communicates with the testing equipment is provided at the side end. The side end of the moving box 103 is provided with an air inlet pipe that can transport dusty air into the testing box 1.

[0024] The working principle of this invention: This device uses "closed environment construction - precise positioning of the dust collector bag body 3 - multi-dimensional detection and displacement - dust-laden airflow testing" as the core logic of the entire process. A sealed testing space is constructed through the testing chamber 1 to prevent leakage of dust-laden airflow; the support frame 2 opens the dust collector bag body 3 and maintains its stable shape; the bag feeding mechanism 5 realizes the feeding and height adjustment of the dust collector bag body 3, and drives the dust collector bag body 3 to rotate during the testing process. When the bag feeding mechanism 5 feeds the dust collector bag body 3, it will be placed over the support frame 2. When the bag feeding mechanism 5 moves the dust collector bag body 3 to its position, the bag feeding mechanism 5 will seal and fit tightly with the support frame 2, so that the support frame 2 fully expands the dust collector bag body 3. At this time, the detection and displacement mechanism 4 realizes the up and down movement of the detection components and the adjustment of the shielding area through multiple sets of electric telescopic rods and gear transmission, simulating different filtration conditions. The drive module 6 provides precise power to each mechanism, and cooperates with the air inlet pipe to input dust-laden air and the air outlet pipe to connect the detection equipment to complete the core performance tests of the dust collector bag body 3, such as filtration efficiency and air permeability. The test data throughout the process is comprehensive and accurate.

[0025] Before inspecting the dust collector bag body 3, the electric telescopic rod 106 extends, pushing the moving box 103 to move away from the fixed box 101 along the guide rail 102. The inspection box 1 is in an open state, which facilitates the installation of the dust collector bag body 3 and other components. After the dust collector bag body 3 is in place, the electric telescopic rod 106 retracts, pulling the moving box 103 to move along the guide rail 102 towards the fixed box 101 until it is in contact with the fixed box 101. Sealing gaskets are provided on the contact surfaces of the moving box 103 and the fixed box 101. The sealing gaskets can ensure that there is no air leakage at the contact point, so that the inspection box 1 forms a closed space. When testing the dust collector bag body 3, dust-laden air enters the testing chamber 1 through the inlet pipe of the moving box 103, passes through the dust collector bag body 3, and is then transported to external testing equipment such as a dust concentration detector and an air flow meter through the outlet pipe of the top cover 104 to complete the acquisition of performance parameters. After the test is completed, the electric telescopic rod 106 extends again, and the moving box 103 resets, making it easy to remove the dust collector bag body 3 and clean the testing chamber 1.

[0026] The testing chamber 1 can create a sealed and controllable testing environment, preventing the leakage of dust-laden airflow and environmental pollution, while providing a stable flow channel for dust-laden air, ensuring the safety of the testing process and the accuracy of the data.

[0027] The cooperation between the guide rail 102 and the electric telescopic rod 106 in this invention enables the smooth movement of the moving box 103; the cylindrical design of the top cover 104 provides moving space for the detection displacement mechanism 4, and when the electric telescopic rod 106 is activated and extended, the detection displacement mechanism 4 moves away from the cylindrical body of the top cover 104 and is inserted into the guide rail 105. The layout of the air outlet pipe and the air inlet pipe conforms to airflow dynamics, ensuring that the dust-laden air passes evenly through the dust collector bag body 3; the overall structure is easy to disassemble, which facilitates the maintenance and cleaning of the detection box 1.

[0028] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 5 Appendix Figure 6 Appendix Figure 7 Appendix Figure 8 Appendix Figure 9 As shown: The detection and displacement mechanism 4 includes a top block 407, on which a slot 408 is provided for slidingly engaging with the guide rail 105. At the bottom of the top block 407, there is an electric telescopic rod 405 that is inserted into the dust collector bag body 3. The bottom of the fixed end and the telescopic end of the electric telescopic rod 405 are respectively fixedly connected to an upper ring 410 and a bottom ring 411. A middle ring 412 is slidably sleeved on the telescopic end of the electric telescopic rod 405. At the bottom of the top block 407, there is an electric telescopic rod 409 located on one side of the electric telescopic rod 405 and whose telescopic end is fixedly connected to the middle ring 412. A folding tube 413 is provided between the middle ring 412 and the upper ring 410.

[0029] The drive module 6 is located inside the drive box 103 and the bottom of the drive module 6 is provided with a lead screw 601. The bag feeding mechanism 5 includes a transmission plate 507 that is correspondingly provided and whose end is threaded around the lead screw 601. The end of the transmission plate 507 is provided with an end seat 505. A fixing ring 504 that is fixed between the two end seats 505 and is sleeved around the top of the dust collector bag body 3 is provided. A gear ring 2 501 is rotatably provided on the fixing ring 504. An elastic ring is provided on the top of the dust collector bag body 3. The bottom of the inner wall of the gear ring 2 501 is provided with a placement groove 503 that engages with the elastic ring. A drive gear 3 506 that meshes with the gear ring 2 501 and is driven by a motor is provided on the end seat 505.

[0030] The bag feeding mechanism 5 also includes several slots 502 located at the side ends of the gear ring 2 501. The cover ring 401 is located inside the gear ring 2 501 and has several brackets 402 with one end inserted into the slot 502. Several racks 406 are provided outside the electric telescopic rod 1 405. The other end of the bracket 402 is rotatably provided with a drive gear 1 403 that meshes with the rack 406. Both ends of the drive gear 1 403 are coaxially provided with bevel gears 404. Two adjacent bevel gears 404 are meshed with each other. One of the drive gears 1 403 is driven by a motor through gears.

[0031] The top ring 201 is located between the cover ring 401 and the placement groove 503. The outer wall of the vertical frame 202 is in contact with the inner wall of the dust collector bag body 3, and the inner wall of the vertical frame 202 is provided with a guide groove 203. The upper ring 410, the middle ring 412 and the bottom ring 411 are all provided with inserts 419 that slide into the guide groove 203.

[0032] The bottom ring component 411 includes an operation box 414 fixed to the bottom of the telescopic end of the electric telescopic rod 405. Several storage rods 420 are provided outside the operation box 414. An outer ring is provided outside the storage rods 420 and an insert block 419 is located on the side end of the outer ring. An opening is provided inside the operation box 414. A gear ring 415 is rotatably provided outside the operation box 414 and a drive gear 418 that meshes with the gear ring 415 and is driven by a motor is provided at the opening. Several moving plates 416 are provided outside the gear ring 415. A slot is provided inside the storage rods 420. A fan-shaped folding stop 417 is provided between the moving plate 416 and the slot.

[0033] In order to conduct a more comprehensive and thorough inspection of the dust collector bag body 3, the present invention is provided with an inspection displacement mechanism 4 that can cover different positions of the dust collector bag body 3. During inspection, the electric telescopic rod 1 405 and the electric telescopic rod 2 409 extend and retract, driving the middle ring 412 and the bottom ring 411 to move up and down synchronously. The folding cylinder 413 extends and retracts with the middle ring 412. The extension and retraction of the electric telescopic rod 2 409 can adjust the height of the middle ring 412 separately, changing the degree of extension of the folding cylinder 413 and simulating different filtration areas. Start the drive motor of drive gear 403, which drives all drive gears 403 to rotate synchronously through bevel gear 404. Drive gear 403 meshes with rack 406, which drives electric telescopic rod 405 to move up and down, thereby driving upper ring 410 to move up and down, realizing comprehensive detection in the vertical direction. To simulate localized filtration at the side of the dust collector bag body 3, the electric telescopic rod 405 extends to lower the bottom ring 411 to the bottom of the dust collector bag body 3. Then, the motor in the operation box 414 is activated to drive the gear 418 to rotate, which in turn drives the gear ring 415 to rotate. The gear ring 415 drives the moving plate 416 to move, causing the fan-shaped folding baffle 417 to unfold or retract from the slot of the storage rod 420 to block the bottom of the dust collector bag body 3 and prevent airflow from entering the dust collector bag body 3 through the channel. At this time, the height of the upper ring 410 is adjusted by driving the drive gear 403, and the electric telescopic rod 405 is activated to extend and retract, keeping the position of the bottom ring 411 unchanged. Then, the electric telescopic rod 409 is activated to extend and retract, causing the middle ring 412 to move up and down, thereby changing the folding state of the folding cylinder 413. At this time, the part blocked by the non-folding cylinder 413 and the bottom ring 411 is the detection area of ​​the dust collector bag body 3.

[0034] The detection shifting mechanism 4 can realize the longitudinal lifting and lowering of the detection component and the adjustment of the obstruction area, simulating different filtration conditions such as different filtration areas and different airflow channels to meet different detection positions. For example, in the prior art, when the dust collector bag body 3 is working, the dust-laden gas generally enters the dust collector bag body 3 from the middle position of the side of the dust collector bag body 3 and is filtered by the dust collector bag body 3 to output clean gas. The impurities in the dust-laden gas are blocked outside the dust collector bag body 3. However, when the impurities in the dust-laden gas gradually block the filter holes of the dust collector bag body 3, the dust collector bag body 3 and the dust-laden gas... The filtration efficiency at the point of direct contact with the filter bag body is reduced, causing a large amount of dust-laden gas to need to enter the filter bag body 3 from other positions on the filter bag body 3. However, in the prior art, the filtration performance of the filter bag body 3 is generally tested according to the working habits of the filter bag body 3, and it is not possible to directly and effectively test the other positions on the filter bag body 3. That is, it is not possible to quickly detect the dust removal performance of each position on the filter bag body 3. Therefore, the present invention sets up a detection shifting mechanism 4 to comprehensively, quickly and directly detect various performance parameters of the filter bag body 3.

[0035] According to the requirements of the testing process, the control system issues a command to start the servo motor of the drive module 6. The output speed and torque are adjusted by the reduction gear, driving the lead screw 601 to rotate, providing height adjustment power for the bag feeding mechanism 5. Since the end seat 505 is provided with a drive gear 3 506 that meshes with the gear ring 2 501 and is driven by the motor, the drive gear 3 506 is provided with rotational power. The drive gear 3 506 drives the gear ring 2 501 and drives the dust collector bag body 3 to rotate. Thus, when the performance of the dust collector bag body 3 is tested, the part of the dust collector bag body 3 to be tested can directly contact the dust-collecting gas, realizing comprehensive testing of the dust collector bag body 3.

[0036] After the dust collector bag body 3 is fitted onto the outside of the vertical frame 202, the vertical frame 202 expands the dust collector bag body 3 from the inside, ensuring that the dust collector bag body 3 maintains its cylindrical shape during the testing process, avoiding collapse or deformation caused by the impact of dust-laden airflow or contact with the testing displacement mechanism 4. When the testing displacement mechanism 4 moves, its insertion block 419 slides along the guide groove 203 of the vertical frame 202. The guide groove 203 provides precise guidance for the insertion block 419, ensuring the stability of the movement trajectory of the testing displacement mechanism 4, while avoiding direct contact between the insertion block 419 and the dust collector bag body 3, preventing damage to the inner wall of the dust collector bag body 3. The testing displacement mechanism 4 supports the dust collector bag body 3 from the inside, maintaining its shape stability during the testing process, providing movement guidance for the testing displacement mechanism 4, avoiding deformation of the dust collector bag body 3 from affecting the testing results, and protecting the dust collector bag body 3 from damage.

[0037] When implementing the dust collector bag performance testing device, firstly, fix the fixed box 101 of the testing box 1 on the flat surface of the laboratory, ensure that the guide rail 102 is horizontal and smooth, start the electric telescopic rod 3 106 to extend, push the moving box 103 away from the fixed box 101 along the guide rail 102, so that the testing box 1 is in an open state, start the servo motor of the drive module 6, drive the lead screw 601 to rotate, drive the transmission plate 507 and the end seat 505 to move downward, so that the fixing ring 504 is fitted on the top of the dust collector bag body 3, the elastic ring is inserted into the placement groove 503 of the toothed ring 2 501 to achieve fixation, and the bracket 402 of the cover ring 401 is inserted into the slot 502 of the toothed ring 2 501 to complete the equipment assembly; Then, the drive transmission plate 507 and the end seat 505 move upward. When they are in place, the dust collector bag body 3 is fitted on the outside of the vertical frame 202 of the support frame 2. The vertical frame 202 opens the dust collector bag body 3 from the inside and maintains its cylindrical shape. The top ring 201 limits the top of the dust collector bag body 3. At the same time, the top block 407 of the detection and shifting mechanism 4 slides into the guide rail 105 of the top cover 104 through the slot 408. The electric telescopic rod 405, the upper ring 410, the middle ring 412 and the bottom ring 411 are inserted into the dust collector bag body 3. The insert 419 is precisely embedded in the guide groove 203 of the vertical frame 202. Then, the electric telescopic rod 106 is retracted, pulling the moving box 103 to fit and connect with the fixed box 101. At the same time, the top block 407 is driven to slide on the guide rail 105, so that the dust collector bag body 3 slides into the sealed space formed by the moving box 103 and the fixed box 101. The sealing gasket ensures that the detection box 1 is sealed. The air outlet pipe of the top cover 104 is connected to external dust concentration detectors, air flow meters and other equipment. The air inlet pipe of the moving box 103 is connected to the dust-laden air source. According to the testing requirements, the electric telescopic rod 405 is activated to adjust the height of the bottom ring 411, and the electric telescopic rod 409 is used to adjust the position of the middle ring 412, so that the folding cylinder 413 can be extended and retracted to change the filtration area. At the same time, the motor of the drive gear 403 is activated, and through the bevel gear 404, all drive gears 403 are linked to mesh with the rack 406, which drives the electric telescopic rod 405 to move up and down as a whole, so as to achieve comprehensive testing in the vertical direction. To simulate local filtration conditions, the electric telescopic rod 405 pushes the bottom ring 411 down to the bottom of the dust collector bag body 3, starts the motor in the operation box 414, drives the gear 418 to rotate the gear ring 415, and the moving plate 416 pushes the fan-shaped folding baffle 417 to unfold from the slot of the storage rod 420, covering a specific area at the bottom of the dust collector bag body 3. Then, the positions of the upper ring 410 and the middle ring 412 are adjusted to lock the detection area. Then, dust-laden air is introduced into the testing chamber 1. After passing through the dust collector bag body 3, the dust-laden air is delivered to the testing equipment through the air outlet pipe to collect parameters such as filtration efficiency and air permeability. After the test is completed, the dust-laden air source is turned off, the electric telescopic rod 106 extends to reset the drive box 103, the drive module 6 and the testing shift mechanism 4 are reset, the fan-shaped folding stop 417 retracts, the dust collector bag body 3 is taken out, the inside of the testing chamber 1 is cleaned, and the next test can be carried out.

[0038] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A dust collector bag performance testing device, comprising a testing chamber (1) and a dust collector bag body (3) located within the testing chamber (1), characterized in that: A support frame (2) that fits against the inner surface of the dust collector bag body (3) is inserted inside the dust collector bag body (3). A detection shifting mechanism (4) inserted into the dust collector bag body (3) is provided in the detection box (1). The support frame (2) includes a top ring (201). The bottom of the top ring (201) is provided with several vertical frames (202) and several horizontal rings. The detection shifting mechanism (4) includes a cover ring (401) located on the top ring (201). A bag feeding mechanism (5) that drives the dust collector bag body (3) to move up and down is provided outside the cover ring (401). A drive module (6) that drives the bag feeding mechanism (5) is provided inside the detection box (1).

2. The dust collector bag performance testing device according to claim 1, characterized in that: The detection chamber (1) includes a fixed chamber (101), a top cover (104) on the fixed chamber (101), a guide rail (105) inside the top cover (104), and a detection shifting mechanism (4) including a top block (407), a slot (408) on the top block (407) for slidingly engaging with the guide rail (105), and an electric telescopic rod (405) at the bottom of the top block (407) for inserting into the dust collector bag body (3). The bottom of the fixed end and the telescopic end of the 05) are respectively fixed with an upper ring (410) and a bottom ring (411). The telescopic end of the electric telescopic rod one (405) is slidably fitted with a middle ring (412). The bottom of the top block (407) is provided with an electric telescopic rod two (409) located on one side of the electric telescopic rod one (405) and whose telescopic end is fixed with the middle ring (412). A folding tube (413) is provided between the middle ring (412) and the upper ring (410).

3. The dust collector bag performance testing device according to claim 2, characterized in that: The testing box (1) also includes a guide rail (102) located on one side of the bottom of the fixed box (101). A movable box (103) is slidably mounted on the guide rail (102). An electric telescopic rod (106) is mounted on the fixed box (101). The telescopic end of the electric telescopic rod (106) is fixedly connected to the movable box (103). By starting the electric telescopic rod (106) to retract, the movable box (103) can move towards the fixed box (101) and fit and connect with the fixed box (101), thereby putting the testing box (1) in a closed state.

4. The dust collector bag performance testing device according to claim 3, characterized in that: The drive module (6) is located inside the moving box (103) and the bottom of the drive module (6) is provided with a lead screw (601). The bag feeding mechanism (5) includes a transmission plate (507) that is provided with a corresponding end and the end is threaded around the lead screw (601). The end of the transmission plate (507) is provided with an end seat (505). A fixing ring (504) that is fitted around the top of the dust collector bag body (3) is fixed between the two end seats (505). A gear ring (501) is rotatably provided on the fixing ring (504). An elastic ring is provided on the top of the bag feeding mechanism (5). The bottom of the inner wall of the gear ring (501) is provided with a placement groove (503) that engages with the elastic ring. A drive gear (506) that meshes with the gear ring (501) and is driven by a motor is provided on the end seat (505).

5. The dust collector bag performance testing device according to claim 4, characterized in that: The bag feeding mechanism (5) also includes several slots (502) located at the side end of the gear ring (501). The cover ring (401) is located inside the gear ring (501) and the cover ring (401) is provided with several brackets (402) with one end inserted into the slot (502). Several racks (406) are provided outside the electric telescopic rod (405). The other end of the bracket (402) is rotatably provided with a drive gear (403) that meshes with the rack (406). Both ends of the drive gear (403) are provided with bevel gears (404). Two adjacent bevel gears (404) are meshed and connected. One of the drive gears (403) is driven by a motor through gears.

6. The dust collector bag performance testing device according to claim 4, characterized in that: The top ring (201) is located between the cover ring (401) and the placement groove (503). The vertical frame (202) is in close contact with the inner wall of the dust collector bag body (3), and the inner wall of the vertical frame (202) is provided with a guide groove (203). The upper ring (410), middle ring (412) and bottom ring (411) are all provided with inserts (419) that slide into the guide groove (203).

7. The dust collector bag performance testing device according to claim 6, characterized in that: The bottom ring component (411) includes an operation box (414) fixed to the bottom of the telescopic end of the electric telescopic rod (405). Several storage rods (420) are provided outside the operation box (414). An outer ring is provided outside the storage rods (420) and the insert (419) is located at the side end of the outer ring. An opening is provided inside the operation box (414). A gear ring (415) is rotatably provided outside the operation box (414) and a drive gear (418) is provided at the opening that meshes with the gear ring (415) and is driven by a motor. Several moving plates (416) are provided outside the gear ring (415). A slot is provided inside the storage rods (420). A fan-shaped folding stop (417) is provided between the moving plate (416) and the slot.

8. The dust collector bag performance testing device according to claim 2, characterized in that: The top cover (104) is provided with a cylinder that allows the top block (407) to be inserted and an air outlet pipe that communicates with the testing equipment is provided at the side end. The side end of the moving box (103) is provided with an air inlet pipe that can transport dusty air to the testing box (1).

Images